Sleep Apnea: Symptoms, Testing and Treatment

Sleep Apnea In Canada

• 6.4% of adults aged 18 to 79 reported a sleep apnea diagnosis in 2016–2017.
• 14.9% more were at high risk on the STOP-Bang screening questionnaire, suggesting many cases are undiagnosed.

Source: Statistics Canada, Canadian Health Measures Survey. Think you might be one of them? Try our sleep apnea quiz.

Obstructive Sleep Apnea

Obstructive sleep apnea, or OSA, is the most common type. During sleep, the muscles and soft tissues around the throat relax. In a susceptible airway, the tongue, soft palate or surrounding tissue can narrow or block airflow even though the chest is still trying to breathe.

Central Sleep Apnea

Central sleep apnea is different. The airway may remain open, but breathing effort pauses because the brain does not consistently send the appropriate signal to the breathing muscles. It can be associated with certain heart, neurological or medication-related conditions and requires clinical evaluation.

Mixed or Treatment-Emergent Patterns

Some people have both obstructive and central events. Central events can also appear when PAP therapy is started in a subset of patients. These patterns should be interpreted by a qualified clinician rather than inferred from symptoms alone.

Apnea, Hypopnea and Sleep Disruption

An apnea is a pause in airflow; a hypopnea is a meaningful reduction in airflow. Sleep studies assess how often these events occur and may also evaluate oxygen, breathing effort, heart rate, sleep stage and body position. The exact signals depend on the test.

Who Can Have Sleep Apnea

Sleep apnea can affect adults and children, people of different body sizes, and all sexes. Risk increases with factors such as age, airway anatomy, family history, obesity, alcohol, smoking and certain medical conditions, but no single feature confirms or excludes it.

Learn more about sleep apnea causes and risk factors and how they are considered alongside symptoms and test results.

Assessment and Testing

A clinician considers symptoms, sleep history, medicines, health conditions, and observations from a bed partner before selecting a sleep study. A negative, inconclusive, or technically inadequate home test may need follow-up if symptoms or clinical concern remain.

Persistent loud snoring, observed pauses, gasping, unrefreshing sleep, or excessive daytime sleepiness are useful reasons to begin a clinical conversation. They do not establish a diagnosis by themselves. A home sleep apnea test may be appropriate for selected adults with suspected uncomplicated obstructive sleep apnea; an in-lab study can provide broader sleep information when symptoms or health history make that necessary.

Bring a brief sleep history to an appointment: typical sleep schedule, daytime effects, medicines, relevant health conditions, and observations from a bed partner. This helps the care team choose the right question and the right test instead of relying on a generic checklist.

Symptoms in Everyday Life

Sleep apnea can show up at night, during the day, or both. At night, a partner may notice snoring, quiet pauses, gasping, choking, or restless sleep. During the day, a person may notice sleepiness, fatigue, trouble concentrating, irritability, morning headaches, or waking unrefreshed. These symptoms overlap with many other sleep, medical, and lifestyle issues. Their value is that they help identify a pattern worth discussing, not that they provide a diagnosis.

The pattern matters more than a single bad night. Note whether symptoms are persistent, whether they affect work, driving, caregiving, or mood, and whether there are observations from someone who shares your sleep environment. Focused pages can help visitors explore one concern in more detail without turning the pillar into a symptom checklist.

Treatment and Follow-up

Treatment depends on the diagnosis and individual situation. CPAP is a common therapy for obstructive sleep apnea, but settings, masks, comfort concerns, and alternatives should be managed with the treating team. Do not make unsupervised changes to prescribed treatment.

Treatment is a continuing conversation. A care team may consider symptoms, comfort, daytime function, other health conditions, and response over time. If therapy is difficult to use, report the specific barrier—such as leaks, dry mouth, congestion, or pressure discomfort—rather than stopping or changing a prescribed plan without guidance.

Making Results Useful

Ask the ordering clinician to explain what the study measured, whether the recording was adequate, and how the findings fit your symptoms. A report may include technical terms or breathing indices that are useful in context but should not be used to self-diagnose or select a treatment. If a result is negative, inconclusive, or does not explain ongoing symptoms, the right next step may be another test or a different evaluation.

This is also a good time to ask what follow-up looks like. Knowing who will review results, when to contact the team, and what changes should be reported helps turn testing into an informed care decision rather than an isolated score.

Safety and Next Questions

Do not drive or perform safety-sensitive work when too sleepy to do so safely. Severe breathing difficulty, chest pain, loss of consciousness, stroke-like symptoms, or another medical emergency require urgent local care.

This pillar connects to focused pages on symptoms, witnessed apnea, snoring, daytime sleepiness, home testing, diagnosis, CPAP therapy, mask types, and dry mouth. Use those pages for a direct answer, then return here for the broader assessment and follow-up context.

If you drive, see sleep apnea and driving in Canada. For newer treatment options, see Zepbound for sleep apnea.

When to get medical help

This page can’t diagnose sleep apnea, recommend a device, confirm whether a home test suits you or change prescribed treatment. If you have symptoms, talk to a qualified clinician, or start with our 2-minute sleep apnea quiz.